If an employee has 10 sick days and has used five, the employer would put the five days of pay at the daily rate the employee earns. This would go into an account that would be like a health account. The employee could only use the money if they became ill and needed the days.

Over time, the dollar amount would grow. When the employee retired, whatever was left in that account would be theirs. The benefit to the employer is that there would be zero payout at the end. Each year their books would be clear.